A transgenic construct containing the coding domain of Cre recombinase, driven by a 12.4 kb fragment of the mouse villin 1 gene, and a metallothionein polyadenylation site sequence was injected into the pronuclei of fertilized C57BL/6J x SJL/J mouse eggs. Seven lines were generated with similar expression patterns. The pound symbol (#) is used when no line is specified and/or lines are pooled. (J:78815)